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A researcher wishes to test the effectiveness of a flu vaccination. 150 people are vaccinated, 180 people are vaccinated with a placebo, and 100 people are not vaccinated. The number in each group who later caught the flu was recorded. The results are shown below.

	Vaccinated	Placebo	Control
Caught the flu	8	19	21
Did not catch the flu	142	161	79

Find and interpret the relative risk of catching the flu, comparing those who were vaccinated to those in the control group.

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Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M91002725

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